Mac runs slow diagnostic reference code adp000

#MAC RUNS SLOW DIAGNOSTIC REFERENCE CODE ADP000 HOW TO#

Note that if you leave the Ethernet cable plugged in and boot with OPTION + D, you can do some extra things, such as access your support and service options and contact Apple support. Hold down just the D key right after you hear the startup chime. Note that there is no prefix key used here.

#MAC RUNS SLOW DIAGNOSTIC REFERENCE CODE ADP000 HOW TO#

The Apple Diagnostics has detailed steps on how to shut down your Mac, which peripherals to disconnect, and how to hold down the D key at boot. If your Mac is from 2012 or earlier and has OS X v10.8.4 or earlier, use the system software disc or USB flash drive that came with your Mac.ДЇor this how-to, I'll discuss Macs introduced in June 2013 or later and the Apple Diagnostics.If your Mac is from 2012 or earlier and has OS X v10.8.4 or later, use Apple Hardware Test, which is built into your Mac.If your Mac is from 2013 or later, use Apple Diagnostics, which is built into your Mac.The first applicable document here is Apple support doc #PH18765. (If the introduction date for the product isn't specified, you can use a great app called Mactracker to convert a model number to an introduction date.) One way to do this is to use Apple Menu > About This Mac. The first step is to determine the OS version and year your Mac was introduced. This article is restricted to the case where you suspect something is wrong with the very Mac itself.

It could be a corrupted or failing boot hard disk or SSD, a flaky peripheral or a damaged or conflicted OS X. There a many ways a problem can crop up on your Mac. The technology has changed over the years, and the procedure is determined by how old your Mac is. Modern Macs have a built-in diagnostic test that can be used to help troubleshoot a hardware problem.

Mac runs slow diagnostic reference code adp000